5. Separate Them

This is the strategy I found that I used most often to help deal with their sibling rivalry. They could not argue if they were in two separate rooms. When an argument broke out and nothing else worked, I simply found them a different area to be in, away from each other. I tried not to use this one too often, but there were times it was simply the best way to deal with the situation. It was also very simple to do.